<!doctype html>
<html>
  <head>
    <title>CodeMirror: JavaScript mode</title>
    <link rel="stylesheet" href="../../lib/codemirror.css">
    <script src="../../lib/codemirror.js"></script>
    <script src="javascript.js"></script>
    <link rel="stylesheet" href="../../doc/docs.css">
    <style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
  </head>
  <body>
    <h1>CodeMirror: JavaScript mode</h1>

<div><textarea id="code" name="code">
// Demo code (the actual new parser character stream implementation)

function StringStream(string) {
  this.pos = 0;
  this.string = string;
}

StringStream.prototype = {
  done: function() {return this.pos >= this.string.length;},
  peek: function() {return this.string.charAt(this.pos);},
  next: function() {
    if (this.pos &lt; this.string.length)
      return this.string.charAt(this.pos++);
  },
  eat: function(match) {
    var ch = this.string.charAt(this.pos);
    if (typeof match == "string") var ok = ch == match;
    else var ok = ch &amp;&amp; match.test ? match.test(ch) : match(ch);
    if (ok) {this.pos++; return ch;}
  },
  eatWhile: function(match) {
    var start = this.pos;
    while (this.eat(match));
    if (this.pos > start) return this.string.slice(start, this.pos);
  },
  backUp: function(n) {this.pos -= n;},
  column: function() {return this.pos;},
  eatSpace: function() {
    var start = this.pos;
    while (/\s/.test(this.string.charAt(this.pos))) this.pos++;
    return this.pos - start;
  },
  match: function(pattern, consume, caseInsensitive) {
    if (typeof pattern == "string") {
      function cased(str) {return caseInsensitive ? str.toLowerCase() : str;}
      if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
        if (consume !== false) this.pos += str.length;
        return true;
      }
    }
    else {
      var match = this.string.slice(this.pos).match(pattern);
      if (match &amp;&amp; consume !== false) this.pos += match[0].length;
      return match;
    }
  }
};
</textarea></div>

    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        lineNumbers: true,
        matchBrackets: true
      });
    </script>

    <p>JavaScript mode supports a single configuration
    option, <code>json</code>, which will set the mode to expect JSON
    data rather than a JavaScript program.</p>

    <p><strong>MIME types defined:</strong> <code>text/javascript</code>, <code>application/json</code>.</p>
  </body>
</html>
